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A release hardened film

A hardened film and release technology, applied in coatings, polyurea/polyurethane coatings, etc., can solve the failure of shared bicycle smart locks and GPS positioning functions, affect solar panels receiving "sunlight", and affect shared bicycle power generation systems, etc. question

Active Publication Date: 2021-07-06
HEFEI LUCKY SCI & TECH IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, various publicity advertisements also "focused" on the favorable carrier of solar panels of shared bicycles, but this seriously affected the "sunshine" received by the solar panels, which in turn affected the power supply and generation system of shared bicycles, making the shared bicycles smart Lock and GPS positioning functions fail

Method used

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  • A release hardened film
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] With 25.0g hexafunctional aromatic urethane acrylate prepolymer (Sinlimei Technology Co., Ltd., trade name: 670A2, functionality: 6), 10.0g photoinitiator (manufactured by Tianjin Tianjiao Chemical Co., Ltd., trade name: 184 ), 3.0g of leveling aid (BYK-UV3570, the molecular weight of the siloxane structure accounts for 80% of the molecular weight of the leveling aid), 10.0g of organic particles (polystyrene PS, particle size D1 is 15μm), 3.0 g of dispersant (BYK-111) and 49.0 g of ethanol were placed in a stirring pot, and stirred evenly to obtain a coating material.

[0036] The coating solution is coated on one side of a polycarbonate film with a thickness of 250 μm, and after drying for 3 minutes at an oven temperature of 120° C. 2 The coating was cured by UV light to obtain a matte hard coating with a coating thickness D2 of 3 μm. The evaluation results are listed in Table 1.

Embodiment 2

[0038]With 40.0g hexafunctionality aliphatic urethane acrylate prepolymer (Xinlimei Technology Co., Ltd., trade name: 230A2, functionality: 6), 2.0g photoinitiator (manufactured by Tianjin Tianjiao Chemical Co., Ltd., trade name: TPO ), 0.5g of leveling aid (BYK-371, the molecular weight of the siloxane structure accounts for 70% of the molecular weight of the leveling aid), 1.0g of organic particles (polymethyl methacrylate PMMA, particle size D1 is 16 μm), 0.2 g of dispersant (BYK-2008) and 56.3 g of methyl ethyl ketone were placed in a stirring pot, and stirred evenly to obtain a coating material.

[0039] Apply the coating solution to one side of a polyethylene terephthalate film with a thickness of 188 μm, dry it for 3 minutes at an oven temperature of 120° C. 2 The coating was cured by UV light to obtain a matte hard coating with a coating thickness D2 of 6 μm. The evaluation results are listed in Table 1.

Embodiment 3

[0041] 31.0g nine-functionality aliphatic urethane acrylate prepolymer (Sartomer, trade name: CN9013NS, functionality: 9), 5.0g photoinitiator (manufactured by Tianjin Tianjiao Chemical Co., Ltd., trade name: 1173), 2.0 g of leveling aid (BYK-3710, the molecular weight of the siloxane structure accounts for 90% of the molecular weight of the leveling aid), 1.5g of organic particles (polybutyl methacrylate PBMA, particle size D1 is 17.5 μm) , 0.5 g of dispersant (BYK-2000) and 60.0 g of ethyl acetate were placed in a stirring pot, and stirred evenly to obtain a coating material.

[0042] Apply the coating liquid on one side of a polymethyl methacrylate film with a thickness of 500 μm, dry it for 3 minutes at an oven temperature of 120° C. 2 The coating was cured by UV light to obtain a matte hard coating with a coating thickness D2 of 3.5 μm. The evaluation results are listed in Table 1.

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Abstract

A release type hardened film, comprising a support and a matte hard coat coated on the surface of the support, the matte hard coat is solidified from a coating solution made of the following components in parts by weight: 25 to 40 parts by weight of polyurethane acrylate prepolymer, 2 to 10 parts by weight of photoinitiator, 0.5 to 3 parts by weight of leveling aid, 1 to 10 parts by weight of organic particles, and 0.2 parts by weight of dispersant 3 parts by weight, 40 parts by weight to 60 parts by weight of organic solvent. The release hardened film provided by the invention has low release force, can prevent the sticking of advertisement stickers and tapes, and meanwhile, the coating has the functions of anti-scratch and anti-glare, and can be used for surface protection of shared bicycle solar panels.

Description

technical field [0001] The invention relates to the field of thin films, in particular to a surface protection film for a solar battery panel used by shared bicycles. Background technique [0002] With the rapid development of the mobile Internet in the past two years, Internet shared bicycles led by Mobike and ofo have emerged as the times require. They are characterized by convenient and fast operation, energy saving and environmental protection, low price, and convenient "last mile" travel. Unstoppable tide. According to relevant data, in 2016, the overall number of users in China's shared bicycle market was nearly 19 million, and it is predicted that in 2017, the number of users in the shared bicycle market will reach 50 million. In the bicycle hardware, there are generally two ways for the shared bicycle power supply system to meet the smart lock and GPS positioning functions. One is to install a lithium battery in the bicycle lock, and the user drives the generator to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J7/046C09D175/14C09D7/65C08L69/00C08L67/02C08L33/12
CPCC08J2375/14C08J2433/12C08J2467/02C08J2469/00C08L2203/16C09D175/14C08J7/0427C08L25/06C08L69/00C08L33/12C08L33/10
Inventor 李恒王巧刘玉磊
Owner HEFEI LUCKY SCI & TECH IND
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